#2A3043
Closest named color: Gunmetal (#293241). oklch(31.2% 0.035 270.7), rgb(42, 48, 67).
Aa
White text reads best on this color (13.10:1).
About this color
#2A3043 is a dark, muted blue. In OKLCH its lightness is 31%, its chroma 0.035 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.009 away. White text reads best on it, at 13.10:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | muted (0.035) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.60:1 |
| White text | 13.10:1 |
Values
| HEX | #2A3043 |
| RGB | rgb(42, 48, 67) |
| HSL | hsl(226, 23%, 21%) |
| OKLCH | oklch(31.2% 0.035 270.7) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #2A3043 | 13.10:1 | AAA | Lc -102.6 | Preferred for body text |
| Black text on #2A3043 | 1.60:1 | Fails | Lc 0.0 | Not readable |
| #2A3043 text on white | 13.10:1 | AAA | Lc 99.4 | Preferred for body text |
| #2A3043 text on black | 1.60:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.
-
Step 50
50
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7EAF2
oklch(93.7% 0.011 269.5)
-
Step 200
200
#D3D9E9
oklch(88.6% 0.023 269.4)
-
Step 300
300
#B6C0DC
oklch(80.9% 0.041 269.9)
-
Step 400
400
#919FCB
oklch(70.7% 0.067 270.9)
-
Step 500
500
#7687BE
oklch(63.2% 0.085 270.6)
-
Step 600
600
#5F70AA
oklch(55.6% 0.093 270.7)
-
Step 700
700
#4E5D92
oklch(49% 0.087 270.9)
-
Step 800
800
#404C76
oklch(42.6% 0.072 271)
-
Step 900
900
#36405F
oklch(37.7% 0.055 269.9)
-
Step 950
950 (this color)
#2A3043
oklch(31.2% 0.035 270.7)
#2A3043 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #2A3244 | 0.006 |
| Deuteranopia (no green cones) | #283043 | 0.003 |
| Tritanopia (no blue cones) | #233437 | 0.031 |
| Achromatopsia (no color) | #303030 | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A3043
#2A3043
oklch(31.2% 0.035 270.7)
- #38301C
#38301C
oklch(31.2% 0.035 88.5)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #2A3043, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.009
- Space Cadet #2B2D42 ΔE 0.010
- Dark Blue Grey #1F3B4D ΔE 0.037
- Prussian Blue #1D3557 ΔE 0.038
- Onyx #343A40 ΔE 0.041
- Oxford Blue #1B263B ΔE 0.044
- Midnight Green #073B4C ΔE 0.045
- Dark #1B2431 ΔE 0.055
Use #2A3043 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.